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DS: Fachverband Dünne Schichten

DS 43: Poster II: Organic thin films; Atomic layer deposition, Thin film characterization: Structure analysis and composition (XRD, TEM, XPS, SIMS, RBS, ...)

DS 43.8: Poster

Donnerstag, 3. April 2014, 16:00–19:00, P1

Investigation of electronic and structural properties of vanadyl phthalocyanine on graphene interlayers on Ni(111) — •Hilmar Adler, Heiko Peisert, Mateusz Paszkiewicz, Johannes Uihlein, Małgorzata Polek, and Thomas Chassé — Institut für Physikalische und Theoretische Chemie, Auf der Morgenstelle 18, 72076 Tübingen, Germany

In previous years, transition metal phthalocyanines (TMPcs) gained increasing attention due to their tunable properties, resulting in various applications based on these materials such as light-emitting diodes, field-effect transistors and solar cells and, most recently, the interface between TMPcs and metal substrates raised additional interest due their important role in spintronic nanodevices. In the case of TMPcs, molecule-substrate interactions can drastically influence both electronic and magnetic properties of the first layer of the organic semiconductor. The interface properties however can be tuned by the insertion of a buffer layer [1]. Graphene with its exciting electronic properties is an ideal candidate for such layers. Vanadyl phthalocyanine as a polar and non-planar TMPc is in particular suited for the tuning of electronic properties of interfaces. Charge transfer processes depending on the adsorption geometry on Ni(111) and graphene/Ni(111) were investigated using scanning tunneling microscopy, X-ray photoelectron spectroscopy and X-ray absorption spectroscopy.
J. Uihlein, H. Peisert, M. Glaser, M. Polek, H. Adler, F. Petraki, R. Ovsyannikov, M. Bauer, T. Chassé J.Chem.Phys. 138 (2013) 081101.